Pipe coupling



Patented Nov. 16, 1926. f

UNITED sTA'TEs PATENT' oFFIcEj.,l

:FRED c. EANTZ, or WEBSTER GRovEs, MISSOURI, AssIGNoB. To MIDWEST PIIING c:

,SUPPLY co., or sT. LoUIs, lMISSOURI, A coEIfoRA'rIoN 0I' MISSOURI.

PIPE coUPEING. 1`

Application iledv August 7, 192,5. Serial No, 48,700.

My invention relates to the art lof joining the mating ends of pipe Sections which form conduits, or'the like, for the conveying of gases or liquids, and has .for its object to provide a construction which will be strong and durable 'and will be practically self-seating in a continuous4 line lof Contact, circrunferentially, of the 'matingl ends of two adjacent pipe sections `when the' operator simply tightens the connecting bolts. v 1 f A further object is to provide such a construction as indicated above which will also permit of slight 'angular adjustments. between pipe sections, fOr'suCh isA not only desirable,- but in many cases essential.l

'A further .and most important object is to provide such a construction as' indicated above in which there will be a substantially continuous unbroken line of the inner wall of the completed conduit, so that there will be no obstruction whatsoever tothe flow of the' gases or liquids which are usually under pressure in going through the conduit.

A further object is to provide such a construction particularly adapted for utilization in conduits-conveying liquids or gases which are under what is known as very high pressure. j

A further object is to provide alocking means for, myv pipe joints in which theelements are practically self-seating, .and not` dependent upon careful adjustment hy4 the operator, in theassembly of the parts.

My invention consists of the details ofconstruction hereinafter set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which' Fig. 1 shows a perspective view .of portions of adjacent pipe ends as they are assembled and mated under my invention;

Fig. 2 shows a longitudinal sectional 'view'l of the same.

Referring to the accompanying drawings,

reference numeral 10 is used to indicate the.

end of. one pipe section which'is formed with an upwardly extending ange 11 surrounding the outerl surface of the said end. The iiange 1l being formed, as is shown`and described,` causes the said pipe end to be of much greater thickness than the wall of the pipe, and the mating face of this pipe end extends from near the outer edge of the said flange 11 to the inner wall of the pipe, and this face, on the female member, is

arcuately sconcave,.as shown`at 12. vBy this construction, .it is obvious a seating space 'of considerable area is formed on this mating end. e

JThe numeral 13'indicates the mating pipe section. (which in .this Y description is the mare end) which is iikewiseformed with Y a flange 14 tomate with the flange 11'; and

theface, indicated yat 15,- on this male flange is arcuatel'y convex, so as -to perfectly mate ,with the concave face on the female end. The

two flanges 11 Aand '14 are each formedwdth their rear face arcuatel'y convex, as shown at 16 and' 17 respectively, so as to receive the arcuate concave mating surfaces 18 and 19, formed on the annuli 20 and 2l, respectively, so as to provide proper seating therefor. The annuli, as shown, iit around the periphery of the pipe sections, and are lpro vided `with the. arcuate concave surfaces 18 and 19, to mate with the arcuate convex surfaces 16 and 17 respectively. The anges are also provided with a multiplicity ofv transverse orices 22 4and 23, respectively, t0 receive the bolts 24.I

By my construction, the iianges 11 and 14 provide not only greater thickness at the` end of the mating pipe sections, so, as'to' the free Viiowingof the liquids,v gases, or

contents of. the conduit.A These .arcuate lmating surfaces also provide for slight,l angular adjustments between the mating vends of pipe sections.

`'A most importantv part of'fmy invention `is the forming of that surface of the flanges 11 and 14 which receivesfttheir respective' annulion an arcuate configuration, and the vsurf'ace's'of the respective annuli which t against the same'are, obviously, also arcuate. This makes it possible to seat the various parts 4.constituting my coupling firmly in their respective positions, even if' an angular adjustment is made between mating pipeends. I

In\practical operation, the two pipe ends are placed in contact with eachother and,

` by my construction, cannot avoid auto-` matically taking their proper seat, and-z thisfj is.v affact even if a 'slight angular; adjustjiyV ment is 'de`s ired between'the mating.- 'sec-" tions; vThe'annulps for each pipe section "j- :is-then .moved-"to its positionfand cannot `avoid ltaking its proper seat against.`tl1ejl pipe sect-ion" and .the arcuate surfaces. .1' 6- 1 `iices and the nuts 25 drawn 'upuntil' all theA parts are firmly andtightly seated together .15 andby this'means are heldI in such position'- andjl, respectively. `The annulus rotates freely on thepipe' en d'and 'the-"orifices are placed in proper alignment. Thebolts 24- are then passedt'hrough the'registering ori- 'By my" cn'struction `it is unnecessary.v 'toy' employ the use of a gasket, and'all expansionv stresses and bolting strainsl are taken upfautomatically. A I am aware th t many devicesV for. like purposes have been produced 'and' utilized,

so .as/tube in 'alignment with its mating annul'usto receive the connectinglada -each annulus. having 'a @continuous lbearing space around 'its' respective pipe and lagainst its' ,tov

respective ange." v HavingI thus` described.. myjinvention, what I claim a'sn'ew and 'desi're to secure by Letters Patentof the United States isj A1*. A pipe coupling, coniprisingpipe sections formed 'with' lianges at adjacent ends, -one flange 'havingvan arcuate concavev contacting surface, the other' end having, an` varcuate convex .contacting surface to abut the aforesaid concave surface, the said mating 'surfaces having a substantially uniform contactvvith each other over substal'i. tially Vtheir entire surace,-s aid pipe sections having substantially theffsameinner -damjeter, the contacting .ends .forming a' sub'-r 'stantially unbroken continuity of SH'IRQ@ 0f tfhefinnervvall, with means to hold ,the V"sectio'ns' firmly seated together. i 2'. A pipe couplifg, comprising.' pipe sec-4 tions formedwithflanges at adjacent-ends, 'onellange havingvan arcuateconcave .con.l f tactingf surface, the other lend having an 50 arcnate convexwontacting su'raceato abut-vl theaioresaid, concave surface, said pipe sec# tions shaving substantially thel sanie inner 'diameter, the contacting' vei'idsfornlirlg'l asubstantially unbroken continuity of-- 'sur-` aceoff the .inner Wall, the 'said matingsur- .faces' having a .Substantially uniform' con-v tact with each other over substantially their entireV surf'ace, the-said flanges' bei-ng forinedl`with varcuate,convex surfaces on their outerv 'sides, ai.L-anulu's aroundV each pipe section and providedlwith a concave arcuate surface vfusil' adapted; toif'seat against` the .convex` arcuate surfaces. fon-'fitheirrespective vflanges,f :i'neans- 'gifto lock tl1e"fannuli in 'stationary*position-j- A'pipeA coupling, comprising pipe tions provided vwith ianges at ltheir'anija?,`

matingfsurfaces having a substantiall A form contact with' each- 'other overtsu stam ti`ally their 'entire"i sul'face""said"pipe 'Sec'.f. tions having vsubstantially.the same inner] diameter, the4 'contacting' endel forming .a` l

l: UU. face of the inner yvva ll,gan annulus 'arund u 'substantially' unbroken continuity --offjsureach 4pipe endthere-being transverse orifices therethrough, a seating surfaceon *eachv an-l n'ulus'to continuously. engage 'theilange'oni it's respectivev pipe end,` boltspassing 'through the orilices invtheannuli' to 'draw the pipe ends/together.

FRED i ouf cent ends, one viia'nge having an.arcaate con-v l Vex surface and*the'l otheruanige havingfa' concave surface to abut theconvexsurface 'for mating ftliefpipe sections, the )said uni- 

